Received: 18 May 2020
Accepted: 6 August 2020
First Online: 27 August 2020
Ethics approval and consent to participate
: Ethical clearance for the study was obtained from the Ethics Review Committee (ERC) of the Faculty of Medicine, University of Kelaniya, Ragama—P/22/04/2020. Written, informed consent to participate will be obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.